CVE-2024-44985: ipv6: prevent possible UAF in ip6_xmit()
First published: Wed Sep 04 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: ipv6: prevent possible UAF in ip6_xmit() If skb_expand_head() returns NULL, skb has been freed and the associated dst/idev could also have been freed. We must use rcu_read_lock() to prevent a possible UAF.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=5.15<5.15.166 | |
| Linux Kernel | >=5.16<6.1.107 | |
| Linux Kernel | >=6.2<6.6.48 | |
| Linux Kernel | >=6.7<6.10.7 | |
| Linux Kernel | =6.11-rc1 | |
| Linux Kernel | =6.11-rc2 | |
| Linux Kernel | =6.11-rc3 | |
| Linux Kernel | =6.11-rc4 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.119-1 6.12.11-1 6.12.12-1 | |
| debian/linux-6.1 | 6.1.119-1~deb11u1 |
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Reference Links
- https://git.kernel.org/stable/c/124b428fe28064c809e4237b0b38e97200a8a4a8
- https://git.kernel.org/stable/c/2d5ff7e339d04622d8282661df36151906d0e1c7
- https://git.kernel.org/stable/c/38a21c026ed2cc7232414cb166efc1923f34af17
- https://git.kernel.org/stable/c/975f764e96f71616b530e300c1bb2ac0ce0c2596
- https://git.kernel.org/stable/c/fc88d6c1f2895a5775795d82ec581afdff7661d1
- https://launchpad.net/bugs/cve/CVE-2024-44985
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-44985
- https://nvd.nist.gov/vuln/detail/CVE-2024-44985
- https://security-tracker.debian.org/tracker/CVE-2024-44985
- https://ubuntu.com/security/CVE-2024-44985
- https://git.kernel.org/linus/2d5ff7e339d04622d8282661df36151906d0e1c7
- https://git.kernel.org/stable/c/b3a3d5333c13a1be57499581eab4a8fc94d57f36
- https://git.kernel.org/stable/c/c47e022011719fc5727bca661d662303180535ba
Frequently Asked Questions
What is the severity of CVE-2024-44985?
The severity of CVE-2024-44985 is classified as high due to its potential to cause a use-after-free condition in the Linux kernel.
How do I fix CVE-2024-44985?
To fix CVE-2024-44985, you should upgrade to the patched version of the Linux kernel listed in the vulnerability details.
What versions of the Linux kernel are affected by CVE-2024-44985?
CVE-2024-44985 affects several versions of the Linux kernel, specifically versions prior to 5.15.166, between 5.16 and 6.1.107, and several others within particular ranges.
Is CVE-2024-44985 exploitable remotely?
CVE-2024-44985 may be exploitable remotely if the Linux kernel is handling IPv6 traffic under certain conditions.
What is the potential impact of CVE-2024-44985?
The potential impact of CVE-2024-44985 includes system crashes, arbitrary code execution, and loss of data integrity due to the use-after-free vulnerability.
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